Servos swing fully when RX is turn on

[cmkiew]

Whenever I plug in the battery to the ESC (which powers my RX), all my servos will swing fully to both ends before settling down at the center position. In the past, I did not notice this until I have binding problem in a new plane setup. To solve the binding problem, I try to adjust servo's EPA at my TX. However, this did not solve the problem. Eventually, one servo's gears broke after many power-up of the RX.

I wonder if this servo swinging thing is normal? If not, how can I prevent this from happening? Btw, I am using Hitec TX and RX. Hope some of you can help me. Thank you.

[skyblueblue]

have u tried using another rx

[cmkiew]

Currently, I am using Hitec TX, Eclipse 7 with Hitec RX, model: HPD-07RH. I tried using a GWS 6ch RX and the same problem persists.

I wonder if the problem is caused by the ESC because I am using it to power my RX and not using a separate battery for the RX?

[skyblueblue]

In that case u have to try each item 1 at a time untill u find the problem. Wat servo u using ?

U can plug a 5v battery into the Rx w/o the esc also and test the servo.

[cmkiew]

Thank you for your comments. I am using GWS Standard servos.

Today, I changed all the servos and the problem is gone. Thus, I conclude is the servos that are giving me the problem.

I wonder if this is caused by aging of servos because this did not happen when they were new. Any ideas?

[skyblueblue]

heard of servo wear but its rare that all 3 get the same problem together thou.

[cmkiew]

Thank you, Skyblueblue.

Actually, you are right, only one servo is in very bad shape. The other two aren't swinging that much, as compared to the faulty one. However, as I did not want any problem in near future, so I change all. Very kaisu of me. :P